Consider dropping support (no longer building) win-x86 SDK

[richlander]

We support Windows x86 (32 bit) today. There are no plans for that to change, however, it isn't clear that anyone relies on the 32-bit SDK. We expect most of the usage is runing apps in a 32-bit platform for density reasons. And that those apps were produced via the 64-bit SDK. There hasn't been a 32-bit version of Windows in quite some time.

We are looking for feedback if this is OK. If so, we'll stop producing the 32-bit Windows SDK.

Related:

• Disable Windows arm32 builds for release/5.0 installer#8624